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Thermal Energy Storage Contribution to the Economic Dispatch of Island power Systems

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CSEE Journal of power and Energy Systems 2020年第1期6卷 100-110页

作者： panagiotis Romanos Emmanouil Voumvoulakis Christos n.Markides nikos Hatziargyriou School of Electrical and Computer Engineering National Technical University of Athens(NTUA)Zografou 15780Greece Hellenic Electricity Distri-bution network Operator S.A.(HEDnO) Athens 11743Greece Clean Energy processes(CEp)Laboratory Depart-ment of Chemical EngineeringImperial College LondonLondon SW72AZU.K.

In this paper the provision of flexible generation is investigated by extracting steam from Rankine-cycle power stations during off-peak demand in order to charge thermal tanks that contain suitable phase-change materials(pCMs);at a later time when this is required and/or is economically effective,these thermal energy storage(TES)tanks can act as the heat sources of secondary thermal power plants in order to generate power,for example as evaporators of,e.g.,organic Rankine cycle(ORC)plants that are suitable for power generation at reduced temperatures and smaller *** type of solution offers greater flexibility than TES-only technologies that store thermal energy and release it back to the base power station,since it allows both derating but also over-generation compared to the base power-station *** solution is applied in a case study of a 50-MW rated oil-fired power station unit at the autonomous system of *** optimal operation of the TES system is investigated,by solving a modified Unit Commitment-Economic Dispatch optimization problem,which includes the TES operating *** results indicate that for most of the scenarios the discounted payback period is lower than 12 years,while in few cases the payback period is 5 years.

关键词： Economic dispatch energy-management energy storage flexibleenergysystem flexiblegeneration generation integrated energystorage phasechangematerials smartgrids

Implication of Sensitive Reactions to Ignition of Methyl pentanoate:H-Abstraction Reactions by H and CH_(3) Radicals

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Chemical Research in Chinese Universities 2021年第3期37卷 711-717页

作者： SHAnG Yanlei nInG Hongbo SHI Jinchun LUO S.n. Key Laboratory of Advanced Technologies of Materials Ministry of EducationSouthwest Jiaotong UniversityChengdu610031P.R.China The peac Institute of Multiscale Sciences Chengdu610027P.R.China

Methyl pentanoate(Mp)was identified as a potential *** facilitate the application of Mp with high efficiency in engines,a comprehensive understanding of combustion chemical kinetics of Mp is *** this work,the H-abstraction reactions from Mp by H and CH_(3) radicals,critical in controlling the initial fuel consumption,are theoretically investigated at the DLpnO-CCSD(T)/CBS(T-Q)//M06-2X/cc-pVTZ level of *** multistructural torsional(MS-T)anharmonicity is characterized using the dual-level MS-T method;the HF/3-21G and M06-2X/cc-pVTZ methods are chosen as the low-and high-level methods,*** conventional transition state theory(TST)is employed to calculate the high-pressure limit rate constants at 298-2000 K with the Eckart tunneling *** calculations indicate that the hydrogen atoms of the methylene functional group are easier to be abstracted by H and CH_(3) *** multistructural torsional anharmonicities of H-abstraction reactions Mp+H/CH_(3) are significant within the temperature range *** tunneling effects are more pronounced at low temperatures,and contribute considerably to the rate constants below 500 *** model from the work of Diévart et *** updated with our calculations,and the simulations of the updated model are in excellent agreement with the reported ignition delay time of Mp/O2/Ar and Mp/Air *** sensitivity analysis indicates that the H-abstraction reactions,Mp+H-CH_(3)CH_(2)CHCH_(2)C(-O)OCH_(3)/CH_(3)CHCH_(2)CH_(2)C(-O)OCH_(3)+H2,are critical in controlling the initial fuel consumption and ignition delay time of Mp.

关键词： Methyl pentanoate H-Abstraction Dual-level MS-T Ignition delay time Kinetic modeling

A populational survey of 45S rDnA polymorphism in the Jefferson salamander Ambystoma jeffersonianum revealed by fluorescence in situ hybridization(FISH)

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Current Zoology 2009年第2期55卷 145-149页

作者： James p. BOGART Department of Integrative Biology University of GuelphGuelphOntario N1G 2W1Canada

The chromosomal localization of 45S ribosomal RnA genes in Ambystoma jeffersonianum was determined by fluorescence in situ hybridization with 18S rDnA fragment as a probe (FISH-rDnA). Our results revealed the presence of rDnA polymorphism among *** populations in terms of number,location and FISH signal intensity on the chromosomes. nine rDnA cytotypes were found in ten geographically isolated populations and most of them contained derivative rDnA sites. Our preliminary study provides strong indication of karyotypic diversification of *** that is demonstrated by intraspecific variation of 45S rDnA cytotypes. rDnA cytotype polymorphism has been described in many other caudate amphibians. We predict that habitat isolation,low dispersal ability and decline of effective population size could facilitate the fixation and accumulation of variable rDnA cytotypes during their chromosome evolution.

关键词： rDnA polymorphism Jefferson salamander Ambystoma jeffersonianum Fluorescence in situ hybridization FISH-rDnA

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多级中空纳米纤维二次电池电极材料

科学通报 2024年第16期69卷 2157-2173页

作者：高松伟郭威牟粤朱柯平崔志民满兴坤张千帆王女赵勇北京航空航天大学化学学院仿生智能界面科学与技术教育部重点实验室仿生能源材料与器件北京市重点实验室北京100191 北京航空航天大学物理学院北京100191 北京航空航天大学材料科学与工程学院北京100191

多级中空纳米纤维材料具有结构可控、成分可调的优点,在二次电池电极材料领域应用广泛.在结构方面:多级中空结构可以有效缓冲电极材料在电化学反应离子嵌/脱过程中的体积变化,阻止电极材料粉碎、脱落,增加电解液和电极材料的有效接触面... 详细信息

多级中空纳米纤维材料具有结构可控、成分可调的优点,在二次电池电极材料领域应用广泛.在结构方面:多级中空结构可以有效缓冲电极材料在电化学反应离子嵌/脱过程中的体积变化,阻止电极材料粉碎、脱落,增加电解液和电极材料的有效接触面积,缩短离子/电子传输路径;在成分方面:可以实现不同特性材料的合理耦合,提升电极材料电导率,加速氧化还原反应动力学.多级中空纳米纤维结构和成分的协同增强作用在提升二次电池容量、倍率、循环性能方面效果显著.本文归纳了现阶段制备多级中空结构纳米纤维的几类方法,包括单针头静电纺丝、多流体静电纺丝和其他合成方法(模板法、水热法、自组装法等).随后,总结了不同结构、成分的纤维在二次电池(如锂、钠、钾离子电池,锂/钠-硫电池,锂金属-空气电池,超级电容器等)中的应用进展.最后,探讨了多级中空结构纳米纤维材料在电化学储能领域的应用潜力.

关键词：多级中空结构纳米纤维异质结构二次电池电极材料

Analytical modeling and ATLAS simulation for a homojunction LED in the mid-infrared spectral region

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Optoelectronics Letters 2009年第6期5卷 417-421页

作者： Sanjeev p. Chakrabarti Department of Electronics and Instrumentation Engineering Institute of Engineering and TechnologyMJP Rohilkhand University Centre for Research in Microelectronics(CRME) Department of Electronics EngineeringInstitute of TechnologyBanaras Hindu University

A generic analytical model and the ATLAS simulation of a homojunction light emitting diode(LED) based on p+-InAs0.91Sb0.09/n0-InAs0.91Sb0.09/n+-InAs0.91Sb0.09 materials grown on lattice matched p+-GaSb substrate are *** LED is suitable for use as source in the optical absorption gas spectroscopy in the mid-infrared spectral region at 300 *** various electro-optical properties of the homojunction LED are evaluated using analytical techniques and ATLAS device simulation *** current-voltage characteristics of the structure are computed analytically and simulated,and the results are found to be in good *** output power of the homojunction LED is estimated as a function of bias current under high carrier injection and compared with the reported experimental results.

关键词：发光二极管灯 ATLAS 同质结红外谱仿真功率LED 高技术条件建模

Faunal richness and checklist of sandflies (Diptera: pyschodidae) in India

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Asian pacific Journal of Tropical Medicine 2023年第5期16卷 193-203页

作者： Harish Kumar Shah Fathima p A n pradeep Kumar Ashwani Kumar prasanta Saini ICMR-Vector Control Research Centre(Field Station) KottayamKeralaIndia

This review aims to fill the voids and to update the checklist of sandfly fauna along with its spatial distribution in *** databases *** online or offline were searched to deduce the information to systematize the Indian sandfly ***/data retrieved were screened and analysed to further update the available latest *** species name and authorship were given in accord with the International Code for Zoological *** compiled an updated checklist of reported Indian sandfly species along with their state-wise distribution till 2022 as per published *** has maximum number of species reports when compared to other endemic states and states with pockets of *** argentipes is the most widely distributed,recorded so far,followed by other Sergentomiya and phlebotomus species in *** this review,we have also described the vector and non-vector species of sandfly prevalent in different parts of the *** eoindianensis,an amber fossil sandfly species recorded from Gujarat might be older than other records of Indian sandfly *** far 69 species(4 genera and 15 subgenera/groups)of phlebotomine sandflies have been recorded in *** knowledge of species diversity and its distribution is a prerequisite for planning a systematic vector control strategy and disease management.

关键词： Indian sandfly fauna Checklist phlebotomine sandflies

Deeply concealed half-graben at the SW margin of the East European Craton(SE poland)-Evidence for neoproterozoic rifting prior to the break-up of Rodinia

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Journal of palaeogeography 2018年第1期7卷 88-97页

作者： p.Krzywiec p.poprawa M.Mikotajczak S.Mazur M.Malinowski Institute of Geological Sciences Polish Academy of SciencesWarsawPoland AGH University of Sciences and Technology CracowPoland Institute of Geophysics Polish Academy of SciencesWarsawPoland

Baltica was one of continents formed as a result of Rodinia break-up 850-550 Ma. It was separated from Amazonia(?) by the Tornquist Ocean, the opening of which was preceded by neoproterozoic extension in a network of continental rifts. Some of these rifts were subsequently aborted whereas the Tornquist Rift gave rise to splitting of Rodinia and formation of the Tornquist Ocean. The results of 1-D subsidence analysis at the fossil passive margin of Baltica provided insight in the timing and kinematics of continental rifting that led to break-up of Rodinia. Rifting was associated with neoproterozoic syn-rift subsidence accompanied by deposition of continental coarse-grained sediments and emplacement of continental *** from a syn-rift to post-rift phase in the latest Ediacaran to earliest early Cambrian was concomitant with deposition of continental conglomerates and arkoses, laterally passing into mudstones. An extensional scenario of the break-up of Rodinia along the Tornquist Rift is based on the character of tectonic subsidence curves, evolution of syn-rift and post-rift depocenters in time, as well as geochemistry and geochronology of the syn-rift volcanics. It is additionally reinforced by the high-quality deep seismic reflection data from SE poland, located above the SW edge of the East European Craton. The seismic data allowed for identification of a deeply buried(11-18 km), well-preserved extensional half-graben, developed in the palaeoproterozoic crystalline basement and filled with a neoproterozoic syn-rift volcano-sedimentary succession. The results of depth-to-basement study based on integration of seismic and gravity data show the distribution of local nE-SW elongated neoproterozoic depocenters within the SW slope of the East European Craton. Furthermore,they document the rapid south-eastwards thickness increase of the neoproterozoic succession towards the nW-SE oriented craton margin. This provides evidence for extensive crustal thinning o

关键词： Rodinia Baltica Tornquist rift Orsha-Volyn Aulacogen Tornquist Ocean neoproterozoic Seismic data Gravity data

Contrasting arthropod communities associated with dwarf mistletoes Arceuthobium globosum and A. vaginatum and their host pinus hartwegii

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Journal of Forestry Research 2018年第5期29卷 1351-1364页

作者： León F.Chávez-Salcedo Mónica E.Queijeiro-Bolanos Víctor López-Gómez Zenón Cano-Santana Blanca E.Mejía-Recamier Aurea Mojica-Guzmán Laboratorio de Interacciones y procesos Ecologicos Departamento de Ecología y Recursos Naturales Facultad de Ciencias Universidad Nacional Autonoma de Moico Av.Universidad 3000 04510 Mexico City Mexico Laboratorio de Ecología y Sistemática de Microartr dpodos Departamento de Ecología y Recursos Naturales Facultad de Ciencias Universidad Nacional Autónoma de M4xico Av.Universidad 3000 04510 Mexico City Mexico Instituto de Biologia Universidad Nacional Autdnoma de Mexico Av. Universidad 3000 04510 Mexico City Mexico Departamento de Ecologia Facultad de Ciencias Naturales Universidad Autdnoma de Quer6taro Av.de las Ciencias s/n 76230 Queretaro Queretaro Mexico

Arthropod communities and epiphytic plants associated with tree canopies have been widely studied and have revealed a great diversity of organisms; however,the community hosted by parasitic plants,such as dwarf mistletoes,remains poorly *** the coniferous forests of north America,dwarf mistletoe infection（Arceuthobium spp.） significantly damages the health of the forest,causing large financial losses for the forest industry,but it also positively affects diversity,especially of mammals and *** study examined the attributes of the arthropod communities associated with two species of dwarf mistletoe [Arceuthobium globosum Hawksw.＆ Wiens and ***（Humb.＆ *** Willd.） ***] and their host pinus hartwegii *** 2010,in five sites located in Zoquiapan（Central Mexico）,we collected plant tissue from the three species *** were separated from the plant tissue and identified to the finest level *** collected 32,059 individuals,for which51 morphospecies were identified,belonging to 15 taxonomic orders; the most abundant orders for the three plants were prostigmata,Thysanoptera and *** community associated with *** had the highest value of diversity（H＇= 1.47; ***,H＇= 0.64; ***,H＇= 0.68） and species richness（S = 40; ***,S = 30; ***,S = 35）; while abundance was significantly higher for the mistletoes（***,n = 407 individuals/sample; ***,n = 536 individuals/sample; ***,n = 134 individuals/sample）.Species richness,abundance and diversity were significantly different for the three studied plants,as well for sampling month and the interaction of these two factors（except for diversity）.The results suggest that the canopy of *** is an important element in the ecosystem,providing a mosaic of resources and conditions to the associated *** also propose that mistletoes are key species within the forest canopy,as they greatly influence the establishment of d

关键词： Arceuthobium spp pinus hartwegii Arthropod community Thrips Mites Hemiparasitic plants

Robotic transanal total mesorectal excision:Is the future now?

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World Journal of Gastrointestinal Surgery 2021年第8期13卷 834-847页

作者： Juan Carlos Sebastián-Tomás Aleix Martínez-pérez Elías Martínez-López nicola de'Angelis Marcos Gómez Ruiz Eduardo García-Granero Department of Surgery Universidad de ValenciaValencia 46010Spain Department of General and Digestive Surgery Hospital Universitario Doctor PesetValencia 46017Spain Faculty of Health Sciences Valencian International UniversityValencia 46002Spain Minimally Invasive and Robotic Digestive Surgery Unit Miulli HospitalAcquaviva delle Fonti 70021Italy Department of General and Digestive Surgery Hospital Universitario Marqués de ValdecillaSantander 39008Spain Grupo de Investigación en Innovación Quirúrgica Instituto de Investigación Biomédica Valdecilla(IDIVAL)Santander 39008Spain Department of General and Digestive Surgery Hospital Universitarioy Politécnico la FeValencia 46026Spain

Total mesorectal excision(TME)is the standard surgical treatment for the curative radical resection of rectal *** invasive TME has been gaining ground favored by the continuous technological *** procedures,such as transanal TME(TaTME),have been introduced to overcome some technical limitations,especially in low rectal tumors,obese patients,and/or narrow *** earliest TaTME reports showed promising results when compared with the conventional laparoscopic ***,recent publications raised concerns regarding the high rates of anastomotic leaks or local recurrences observed in national *** TaTME(R-TaTME)has been proposed as a novel technique incorporating the potential benefits of a perineal dissection together with precise control of the distal margins,and also offers all those advantages provided by the robotic technology in terms of improved precision and *** short-term results have been reported for R-TaTME,but further studies are needed to assess the real role of the new technique in the long-term oncological or functional *** present review aims to provide a general overview of R-TaTME by analyzing the body of the available literature,with a special focus on the potential benefits,harms,and future perspectives for this novel approach.

关键词： Rectal cancer Minimally-invasive surgery Robotics Total mesorectal excision Transanal approach natural orifice surgery